Leila, Spider Queen

+2: Put the top 3 cards of your library into your graveyard.You gain 1 life for each creature put into your graveyard this way.
-X: Exile X creature cards from your graveyard. Create X 1/2 green Spider tokens with reach.
-8: You get an emblem with "Spider creatures you control gain +3/+3 and must be blocked if able."